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主元素

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Basanite and tephrite from Mt. Crater, Cape Bird and Bonney Lake exhibit similar composition in major elements and trace elements, rare earth elements . They are enriched in MgO, TiO〓, transitional elements and compatible elements , and depleted in SiO〓, Al〓O〓, Na〓O, K〓O, incompatible elements and rare earth elements; Latite from Cape Rodeys and Cape Evens are different from basanite and tephrite, they are enriched in SiO〓, Al〓O〓, Na〓O, K〓O, incompatible elements and rare earth elements, and depleted in Mgo, TiO〓, transitional elements and compatible elements. Volcanic rocks in five regions have the same isotopic ratio of 〓Sr/〓Sr (0.703115-0.703334) and 〓Nd/〓 Nd (0.512892-0.513076), however,〓Pb/〓Pb ratio in volanic rocks from Mt. Crater, Cape Bird and Bonney Lake is lower than those of Cape Rodeys and Cape Evens.

主元素氧化物和微量元素、稀土元素含量上,克雷克特山、鸟角和博尼湖南岸的碧玄岩、碱玄岩成分比较类似,均具有较高的MgO、TiO〓、过渡元素和相容元素,较低的SiO〓、Al〓O〓、K〓O、Na〓O、不相容元素和稀土元素;罗德角和伊万思角安粗岩雷同,它们具有较高的SiO〓、Al〓O〓、Na〓O、K〓O、稀土元素和不相容元素,较低的MgO、TiO〓、过渡元素和相容元素,但五地区火山岩几乎具有一致的Sr、Nd同位素比值,〓Sr/〓Sr=0.703115-0.703344、〓Nd/〓Nd=0.512892-0.513076,在Pb同位素比值上,五地区的〓Pb/〓Pb=18.664-19.913,其中碧玄岩和碱玄岩比安粗岩的比值稍低。

This code is the main element analysis codes, which are used to calculate eigenvalues null eigenvector methods.

这个代码是主元素分析的代码,里面有使用MKL计算特征值特征向量的方法。

The algorithm is used in the exchange trip out the main elements of elimination method.

本算法采用的是具有行交换的列主元素消去法。

In the elimination method of solving linear equations, pivot in an elimination step is a element with maximum ''.

在解线性方程组的消元法中,主元素指在某步消元时模最大的那个元素。

In the elimination method of solving linear equations, pivot in an elimination step is a element with maximummod.

在解线性方程组的消元法中,主元素指在某步消元时模最大的那个元素。

Gaussian Elimination is an ancient solving linear equations method, but it's improving, the deformation of ...

高斯消去法是一个古老的求解线性方程组的方法,但它的改进、变形得到的主元素消去法仍然是计算机上常用的计算方法。

Out of the main elements of Gaussian Elimination Act.

++编写的高斯列主元素消去法。

Data of major andminor elements in magnetite, cassiterite, galena and sphalerite from oredeposits within this ore belt suggest that these ore deposits are of skarn,hydrothermal, porphyry and greisen types related to Yanshanian magmaticactivity and that iron in ores came from regional Permian marine interme-diate-basic volcanic rocks whereas partial lead and zinc from Permian geo-synclinic sediments.

矿带中各矿床的磁铁矿、锡石、方铅矿、闪锌矿的主元素和微量元素数据表明,这些矿床是属与燕山期岩浆活动有关的矽卡岩型、热液型、斑岩型和云英岩型矿床;其成矿金属组分中的铁来源于区域晚古生代海相中-基性火山岩,部分铅锌来源于区域二叠纪地槽沉积物。

The results show that the electrochemical window is 3.40V, the crystal grain of new deposit aluminum is ideal, and the boundary of crystal grain is perfect. The main element is aluminum and trace element is oxygen on the surface of cathode.

研究结果表明:铝基离子液体Br-AlCl3的电化学窗口为3.40V;扫描电镜分析表明,阴极新生态的铝晶粒生长完整、晶界完善;X射线能谱分析阴极表面新生态铝的结果显示主元素为铝,微量元素为氧。

In this article author measured the principal element and trace element of Maifanshi with X-ray fluorescence spectrometric method of analysis.

本文用X-射线荧光光谱分析法对麦饭石中的主元素和微量元素进行了测定,测定结果达到检出线的有24种,其中有些是人体所必需的元素。

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